I know that I can't..But I need updated maps. But I think this is not a big problem to load on Garmin servers new OSM maps. I can buy it if they want...But they don't want it. I had a talk with support and they said to me that it is only my dreams.
I've noticed the same thing. Here are a couple of side by side comparisons for areas near me (regional Australia). On the left is another OpenStreetMap app (Pocket Earth in this case, but many other OSM apps have similar levels of detail). On the right is Explore.
FWIW the Digital Atlas of Earth maps are even worse around here. Entire bodies of water, roads etc missing.